NEW YORK — Martin Shkreli, accused of defrauding his hedge fund investors and a pharmaceutical company, was convicted on three of eight counts on Friday, after a five-week trial in U.S. District Court in Brooklyn, N.Y.Shkreli was accused of securities and wire fraud related to two hedge funds he ran, MSMB Capital and MSMB Healthcare.The prosecution brought forth an “avalanche” of evidence, as prosecutor Jacquelyn Kasulis put it in her rebuttal argument, that included a threatening letter he sent to the wife of a former employee, statements he sent to MSMB investors showing great returns at the same time he had no money in fund accounts, three versions of a backdated agreement to make it look as if MSMB Capital had invested in Retrophin when it had not, as well as claims about assets under management that were wildly out of line with his actual fund size.